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    <title>Document</title>
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<body>
    <script>
        // const sum = (...args) => {
        //     let total = 0;
        //     args.forEach(item => total += item);
        //     return total;
        // };
        // console.log(sum(10, 20));
        // console.log(sum(10, 20, 30));

        let arr1 = ['张三', '李四', '王五'];
        let [s1, ...s2] = arr1;
        console.log(s1);
        console.log(s2);
    </script>
</body>

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